CVE-2026-69220
Deeply nested AMQP table/array triggers StackOverflow DoS in RabbitMQ Java client <5.33.1
Is CVE-2026-69220 being exploited?
Not confirmed. CVE-2026-69220 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.40% probability of exploitation in the next 30 days.
How severe is CVE-2026-69220?
CVE-2026-69220 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-69220?
Yes. A fix has been recorded for CVE-2026-69220. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-69220 affect?
CVE-2026-69220 affects rabbitmq-java-client < 5.33.1, Java/JVM applications using rabbitmq-java-client. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-69220?
Upgrade rabbitmq-java-client to 5.33.1 or later; monitor client crashes and restrict untrusted AMQP endpoints.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Pre-auth remote denial of service: malicious AMQP server or MITM sends ~580 nested table levels in connection.start, causing StackOverflowError and client input thread termination.
Patch when possible
- affected< 5.33.1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.